Correctness Has a Price: We Benchmarked Fair Leaderboards
Engineering posts often end with: The new design is correct, scalable, and fast. Fast compared with what? When we changed Podium so tied players rank …
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Redis Cluster Won't Shard Your Hot Leaderboard
"We use Redis Cluster" can mean two very different things: Our dataset is distributed across Redis nodes. Every individual data structure is distribut…
How redis-packhash Helps You Leverage Listpack Hashes in Redis
In my earlier post , I showed that storing a million small values as Redis keys is a waste of memory. It's because every key has its own overhead. To …
Building Resilient Real-Time Systems: WebSockets and Redis for High Availability
Originally published on tamiz.pro . Building real-time systems that can withstand failures, scale under load, and maintain consistent state is a signi…
A Small Refresh Bug That Uncovered Security Gaps in My OTP System
The Bug That Started It All It began as a small bug I found myself while testing: OTP verification kept failing whenever I refreshed the page, opened …
Caching Strategies for a SaaS
In Disaster Recovery and Backups , we made peace with the database disappearing entirely: accept it can happen, and make recovery boring and rehearsed…
Redis Data Structures: An Overview
The reason Redis solves so many problems is that it isn't one thing, it's a collection of data structures, each with commands tuned for a specific acc…
Next.js ISR and On-Demand Revalidation — Caching Without Staleness
Incremental Static Regeneration (ISR) is one of the more powerful caching strategies in Next.js — and one that's often misconfigured in ways that eith…
Your Python rate limiter is lying to you the moment you add a second server
Most rate-limiter tutorials show you a tidy little token bucket that works perfectly — on one machine. Then you deploy to production, where you're run…
How I Built a Production Ready Microservice Notification System with NestJS, Redis, Bull Queues, and Docker
I built a real time notification microservice with NestJS, Redis, PostgreSQL, and Docker. When you are building a system that needs to deliver notific…
Stream Postgres WAL to Redis: Real-Time Read Models with pg2redis
Real-time data pipelines are becoming a normal part of application architecture. Product pages need fresh stock counts, order status screens need fast…
Beyond the Cache Miss: Designing Resilient Caching Layers with Redis Degradation Strategies
1. The Anatomy of a Cache Disaster To design a solution, we must first analyze how cache failures manifest as systemic outages. Consider a standard re…
HackTheBox: Postman Writeup
Summary Postman is an easy-rated Linux machine on HackTheBox. The box exposes an unauthenticated Redis instance that allows writing an SSH public key …
I Built a Redis Clone from Scratch in Node.js — RESP, Persistence, Replication, Pub/Sub and Transactions
Most of us use Redis like this: SET name Alice GET name It feels simple. You send a command. Redis stores something. You get the value back. But I wan…
Чтобы ваши тесты работали быстрее, нужен простой советский… xdist. Я измерил. Часть 2
В первой части я ускорил большой интеграционный pytest-сьют с получаса до полутора минут за счёт инфраструктурных правок. Во второй проверяю следующий…
Building Dhrishti - Part 3: Testing on a Production Grade System
I was now done with the basic setup. However, during my time working at my startup, I have learnt to think about a project wearing multiple caps. One …
When Kubernetes Isn't the Problem: Debugging External Dependencies in AKS
Introduction One of the most common mistakes during incident response is assuming Kubernetes is the problem simply because the application runs on Kub…
Building a Redis Clone in Go
1. Introduction To better understand how databases and network servers work internally, I built a Redis-inspired in-memory database in Go. This projec…
Real-Time APIs Are Simpler Than You Think: Redis, Lua, and 4k Updates/sec
1. Intro — The Problem We Actually Had Building real-time systems is often presented as a distributed systems problem. Kafka, stream processors, event…
From Piper to Polly: How I Built a Production-Ready Text-to-Speech API (and Everything That Broke Along the Way)
A walkthrough of building a voice AI backend — through three TTS providers, a chunking problem, Redis caching, distributed locks, and a thundering her…
Race Condition убил SQLite в нашем проекте: как мы пришли к RediSearch
Мне пришла задача на исследование — выбрать хранилище для промышленной телеметрии. Я раньше с таким вообще не работал. Ни с временными рядами, ни с ре…
Filling a maintainer's "Help needed": shipping a Next.js 16 Redis cache handler
Filling a maintainer's "Help needed": shipping a Next.js 16 Redis cache handler Next.js 16 split caching into two distinct handler interfaces: cacheHa…
A Framework Is Not a Platform
For most of the time we have been writing web applications, two different teams answered two different questions. The framework team decided what the …
5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE
We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthe…